Fan speed control



FIG. 1 is a perspective view of the fan speed control showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a side view thereof, the opposite side being a mirror image; and,

FIG. 4 is a top view thereof, the bottom view being a mirror image.

The rear view is unornamented.

The broken lines represent unclaimed subject matter. 

The ornamental design for a fan speed control, as shown and described. 